Cable equalizer



Oct. 30, 1923. 'M

H. B. COOK CABLE EQUALIZER Filed Dec. l, 1922- lli-I f Patented @ch 30,1923.

UNHTEU STATES HOWARD B. COOK, 0F NORWOOD, OHIO, ASSIGNOR TO THE WARNERELEVATOR MANU- FACTURING COMPANY, OF CINCINNATI, OHIO, A CORPORATION 0FOHIO.

CABLE EQUALIZER.

Application led December 1, 1922. Serial No. 604,138.

To all whom t may concern:

Be it known that I, HOWARD B. COOK, a citizen of the United States, andresiding at Norwood, in the county of Hamilton and -State of Ohio, haveinvented a new and useful Improvement in Cable Equalizers, of which thefollowing specification is a full disclosure.

This invention relates to a device for equalizing the strains upon aplurality ofy ther objects and certain advantages will appear in adescription of the drawing, in which drawing:

Figure 1 is a top plan view of my device as applied to the top rail ofan elevator.

Figure 2 is a side elevation of the structure of Fig. l, parts beingbroken away for purposeV of clearer illustration.

Figure 3 is a transfer section on line 3 3, Fig. 2.

The numeral 1 designates the drawhead ot an elevator frame, only aportion of the traine being herein illust-rated. The drawhead, as hereinshown, is composed of two channel irons attached at their opposite endsto vertically disposed channel irons 2, disposed intermediate of thechannel irons 1. The elevator frame structure, however, forming no partof this invention. Pivoted respectively to bearing pins 3, 4, supportedby and engaged between the channel irons l of the drawhead, are twolevers, 5, 6, each ot unequal arm length, the corresponding arms of eachlever being of equal length, the respective short arms thereof beingopposingly disposed, and the bearing pins of said levers disposed in thesame horizontal plane. Each lever is formed of two plates spaced apartby suitable spacing collars traversed by bolts for clamping the platestogether. The levers swing on the bearing pins centrally between thedrawhead channel irons 1. Links or drawbars, respectively, 7, 8, arepivoted as at 9, 10, to the short arms of the respective levers 5, 6.Links 11, 12, are respectively pivoted as at 13 to the outer extremitiesof the long arms of said levers. The respective extremities of the links11, 12, are pivoted also at 15 to corresponding opposite extremities ofa shackle, doubletree, walking beam or lever 14, as a connector member.The shackle, doubletree or lever, or connector member 14 is of two-plateconstruction, the plates ixedly spaced apart, as in the case of thelevers 5, 6, by suitable spacers traversed by clamping bolts. Ceintrallyof the lever, shackle or connector member 14 and between the platesthereof is pivoted as at 16 a third drawbar 17, which extends upwardly,and parallel with the drawbars 7, 8. The upper end of each of thedrawbars 7, 8 and 17, is provided with a forked or yoke head 18, whichis pivoted at 20 centrally to a single tree-.or lever 25,

at the outer extremities of which and disposed symmetrically at eachside of the pivot are pivoted as at 29 forked cable sockets 27, eachhaving a cable 28 attached thereto. Thus a pair of spaced cablespivotally connect with each drawbar. 'ln order that the cables may besymmetrically and compactly arranged and aligned crosswise of thedrawhead in correspondence to the disposition of grooves of the windingdrum, (not shown) or gmoved pulley over which the cables travel, theequal-armed levers or single trees of the drawbars 7, 8 and 17, aredisposed in non-parallel relation with respect to the lower set oflevers 5, 6 and connector member 14. The equal-armed levers or singletrees 25 on the bars 7 and 8 are disposed in mutually parallel relation,and the lever or single tree 25 of the bar 17 is disposed at a higherelevation and at an angle thereto, and also in non-parallel relationwith the lower set of levers. This, arrangement allows for convenientsymmetrical grouping of the cables, and has been found to beparticularly advantageous as applied to sircable elevator suspension.

Having described my invention, lt claim:

1. n combination with a drawhead, comprising spaced beams, of equalizingelements pivoted between said beams, links attached to the exremities ofsaid equalizing elements, a shackle connecting non-adjacent links, ad

jacent links extending through said shackle, a link tattached to saidshackle centrally thereofV and of said adjacently disposed links,equalizing elements attached to each of said adjacently disposed links,and means for connecting a cable to opposite extremities of eachequalizingl element of the said adjacently disposed links.

2. In combination with a drawhead, comprising spaced parallel beams, ofa 'lower set of equalizing elements between said' beams, and pivotedthereto, in the same plane and symmetrically, at each side of the centerof figure of said drawhead, links pivoted to non-adjacent extremities ofsaid elements, bars attached to adjacent extremities ofsaid elements, ashackle bridging said elements and connected with said links, a barattached centrally of said shackle and disposed in parallelism with thefirst mentioned bars and between the same, an upper equalizing elementpivoted to each bar, and means for connecting cables to the extremitiesofeach upper equalizing element.

3. In a combination, with a drawhead, comprising two spaced parallelbeams, levers having unequal arms pivoted between said beams, saidpivots horizontally aligned, the short arms of said levers adjacentlydisposed, links pivoted to the long arms of said levers, a shackleconnecting said links, a

drawbar pivoted to each short arm of said lever, a third drawbar pivotedto said shackle, centrally thereof and of said first mentioned leversand drawhead, equalarmed levers, one pivoted to the top of each drawbar,and means for connecting a cable to each extremity of each of saidlevers, said levers in non-parallel relation with said first mentionedlevers and shackle.

4. In a combination, with an elevator drawhead, comprising two parallel"b'eams, two levers of unequal narm length pivoted in the sameplanebetween said beams, one symmetrically at each side of the center offigure of said spaced beams, the short arms of said levers disposedmutually adjacent, links pivoted to said short arms, having at theiropposite ends equal-armed levers, links pivoted to said long arms ofsaid unequalarmed levers, a connector member connecting said links, alink pivoted centrally of said connector member, and an equal-armedlever pivoted to said connector member, and rope sockets pivoted at theends of said equal-armed levers.

5. A tensionequalizing device, comprising two pivoted levers havingaligned pivots, drawbars pivoted to adjacent short arms of said levers,links pivoted to non-adjacent long arms thereof,`a shackle memberconnecting said links, said member composed of space plates clampedtogether, a drawbar pivoted between said plates, centra-lly of saidshackle, and equal-armed levers pivoted to the extremities of saiddrawbarin non-parallel relation with one another and with said shackle,and means for attaching cables to the ends of said equalarmed levers.

6. In a; six-cable equalizing device for elevators, the combination withan elevator drawhead, comprising spacedy parallel beams, of pivotedequalizing levers between said beams, said levers having unequal arms,their short arms opposingly related, links pivoted to the outer ends ofthe long arms of said levers, a shackle pivoted to and connecting saidlinks, said shackle member composed of space plates clamped together, adrawbar attached to the short arm of each of said levers and extendedbetween the plates of said shackle, a third drawbar pivoted to saidshackle centrally thereof and of said levers and drawhead, equal-armedlevers, one pivoted at the top of each drawbar, and means for connectinga cable to each extremity of each of said equal-armed levers, saidlevers being in non-parallel relation to said first mentioned levers andshackle, two of said levers mutually parallel and the third non-parallelwith the other two.

7. In a six-cable equalizing device for elevators, the combination withan elevator drawhead, comprising spaced parallel beams, of equalizing eements pivoted between said beams, said elements having unequal arms,their short arms opposingly related, links pivoted-to the ends of thelong arms, a shackle member pivoted to and connecting said links, saidshackle member composed of plates clamped together in spaced relation,

a drawbar attached to each short arm of said levers and extended betweenthe plates oi said shackle, a third drawbar pivoted to said shacklecentrally thereof and of said levers and drawhead, equal-armed elements,'one pivoted at the top of each drawbar, and means for connecting acable to each extremity of each of said equal-armed elements, saidelements being in non-parallel relation to said first mentioned elementsand shackle, two ofsaid levers'mutually parallel and the 115 thirdnon-parallel with the other two.

8. A device of the character disclosed, comprising a support, a pair ofcompanion levers pivotally mounted upon said support,- an equalizinglever at its opposite ends respectively plvotally connecting to one endof each of said companion levers, and single trees respectivelypivotally connected at their centers to the opposite ends of saidcompanion levers and centrally to said equalizing lever, and a pair ofcables respectively pivoted and secured to the opposite ends of eachsingle tree.

9. A device of the character disclosed, comprising a support, a pair ofcompanion levers pivotally mounted upon said support 10 neCted at itscenter to i'ts drawbar, and a pair of cables respectively pivoted andsecured to the opposite ends of the single tree.

In Witness whereof, I hereunto subscribe my name, as attested by the twosubscribing wltnesses.

HOWARD B. COOK.

Witnesses:

L. A. BECK, R. KISTNER.

